Preparation step three - Zero Calibrate the SidePak
With the Zero Filter attached,
Press ENTER again.
Wait until zero calibration is finished, this will take 60 seconds. The display will countdown.
With the Zero Filter still attached verify that the reading stays near 0.000 mg/m 3 or below 0.003 mg/m3. If the reading is not near 0.00 mg/m3 then repeat the zero calibration until it is.
You may need to press the page key one or more times to return to survey mode.
